package com.sen.common;

import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import java.sql.SQLIntegrityConstraintViolationException;

/**
 * 全局异常处理
 */
@Slf4j
@ControllerAdvice(annotations = {RestController.class, Controller.class})//拦截加了这些注解的 类
@ResponseBody // 响应 返回的实体
public class GlobalExceptionHandler {

    /**
     * 异常处理方法
     * @return
     */
    @ExceptionHandler(SQLIntegrityConstraintViolationException.class)//处理的异常 SQL异常
    public R<String> exceptionHandler(SQLIntegrityConstraintViolationException ex) {
        log.error(ex.getMessage());
        //如果异常信息包含  Duplicate entry
        if (ex.getMessage().contains("Duplicate entry")) {
            //根据空格分割异常信息
            String[] split = ex.getMessage().split(" ");
            String msg = split[2] + "已存在";//
            return R.error(msg);
        }
        return R.error("未知错误");
    }

    /**
     * 异常处理方法
     * @param ex 自定义的业务异常
     * @return 返回异常信息
     */
    @ExceptionHandler(CustomException.class)
    public R<String> exceptionHandler(CustomException ex){
        log.error(ex.getMessage());

        return R.error(ex.getMessage());
    }
}
